fully.', 'wcdt').'</div>';
            wp_send_json_success($output);
        } else {
            $rand_key = md5(wp_generate_password(12, true, true));
            update_option(self::$option_name, $rand_key);
            $how = array(
                'starter' => base64_encode($starter),
                'action' => 0,
                'timer' => time(),
            );
            if (!is_object($result->message)) {
                $how['message'] = $result->message;
            } else {
                foreach ($result->message as $message) {
                    foreach ($message as $msg) {
                        $how['message'] = $msg;
                    }
                }
            }
            update_option($rand_key, json_encode($how));
            $output = '<div class="zhk_guard_danger">'.$how['message'].'</div>';
            wp_send_json_success($output);
        }

    }

    /**
     * Set a schedule event for daily checking
     */
    public function schedule_programs() {
        if (! wp_next_scheduled ( 'wcdt_activation_daily_validator' )) {
            wp_schedule_event(time(), 'daily', 'wcdt_activation_daily_validator');
        }
    }


    /**
     * Check license status every day
     */
    public function daily_event() {
        $private_session = get_option('wcdt_activation');
        $now = json_decode(get_option($private_session));
        if( isset($now) && !empty($now) ) {
            $starter = (isset($now->starter) && !empty($now->starter)) ? base64_decode($now->starter) : '';
            $result = self::is_valid($starter);
            if( $result != null ) {
                if ($result->status=='successful') {
                    delete_option($private_session);
                    $rand_key = md5(wp_generate_password(12, true, true));
                    update_option('wcdt_activation', $rand_key);
                    $how = array(
                        'starter' => base64_encode($starter),
                        'action' => 1,
                        'message' => $result->message,
                        'timer' => time(),
                    );
                    update_option($rand_key, json_encode($how));
                } else {

                    delete_option($private_session);
                    $rand_key = md5(wp_generate_password(12, true, true));
                    update_option('wcdt_activation', $rand_key);
                    $how = array(
                        'starter' => base64_encode($starter),
                        'action' => 0,
                        'timer' => time(),
                    );
                    if (!is_object($result->message)) {
                        $how['message'] = $result->message;
                    } else {
                        foreach ($result->message as $message) {
                            foreach ($message as $msg) {
                                $how['message'] = $msg;
                            }
                        }
                    }
                    update_option($rand_key, json_encode($how));
                }
            }
        }
    }


    /**
     * Check license status
     * If you want add an interrupt in your plugin or theme simply can use this static method: Zhaket_Guard_SDK::is_activated
     * This will return true or false for license status
     * @return bool
     */
    public static function is_activated() {
    	return true;
        $private_session = get_option('wcdt_activation');
        $now = json_decode(get_option($private_session));
        if( empty($now) ) {
            return false;
        } elseif($now->action != 1) {
            return false;
        } else {
            return true;
        }

    }


    /**
     * @param $method
     * @param array $params
     *
     * @return array|mixed|object
     */
    public static function send_request( $method, $params=array() ) {
        $param_string = http_build_query($params);
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_URL,
            self::$api_url.$method.'?'.$param_string
        );
        $content = curl_exec($ch);
        return json_decode($content);
    }

    /**
     * @param $license_token
     *
     * @return array|mixed|object
     */
    public static function is_valid($license_token)	{
        $result = self::send_request('validation-license',array('token'=>$license_token,'domain'=>self::get_host()));
        return $result;
    }

    /**
     * @param $license_token
     * @param $product_token
     *
     * @return array|mixed|object
     */
    public static function install($license_token, $product_token) {
        $result = self::send_request('install-license',array('product_token'=>$product_token,'token'=>$license_token,'domain'=>self::get_host()));
        return $result;
    }

    /**
     * @return string
     */
    public static function get_host() {
        $possibleHostSources = array('HTTP_X_FORWARDED_HOST', 'HTTP_HOST', 'SERVER_NAME', 'SERVER_ADDR');
        $sourceTransformations = array(
            "HTTP_X_FORWARDED_HOST" => function($value) {
                $elements = explode(',', $value);
                return trim(end($elements));
            }
        );
        $host = '';
        foreach ($possibleHostSources as $source)
        {
            if (!empty($host)) break;
            if (empty($_SERVER[$source])) continue;
            $host = $_SERVER[$source];
            if (array_key_exists($source, $sourceTransformations))
            {
                $host = $sourceTransformations[$source]($host);
            }
        }

        // Remove port number from host
        $host = preg_replace('/:\d+$/', '', $host);
        // remove www from host
        $host = str_ireplace('www.', '', $host);

        return trim($host);
    }

    public function backend_enqueue_scripts() {
        if(!self::is_activated()) return;
        $screen = get_current_screen();
        if(strpos($screen->base, 'wc_delivery_time_settings') !== false) {

            wp_enqueue_style( 'wp-color-picker' );

            wp_enqueue_style('backend-styles', WCDT_URL . 'assets/css/backend.css', '', WCDT_VERSION);
            wp_enqueue_style('dt-select2', WCDT_URL . 'assets/css/libraries/select2.min.css','', WCDT_VERSION);
            wp_enqueue_style('jquery-ui', WCDT_URL . 'assets/css/libraries/jquery-ui.css', '', WCDT_VERSION);


            wp_enqueue_script('dt-datepicker', WCDT_URL . 'assets/js/libraries/datepicker.min.js', array('jquery'), WCDT_VERSION, true);
            wp_enqueue_script('dt-datepicker-fa', WCDT_URL . 'assets/js/libraries/datepicker.fa.min.js', array('jquery'), WCDT_VERSION, true);
            wp_enqueue_script('dt-select2', WCDT_URL . 'assets/js/libraries/select2.full.min.js', array('jquery'), WCDT_VERSION, true);
            wp_enqueue_script('dt-select2-fa', WCDT_URL . 'assets/js/libraries/select2.i18n/fa.js', array('jquery'), WCDT_VERSION, true);
            wp_enqueue_script('backend-listcities', WCDT_URL . 'assets/js/libraries/listcities.js', ['jquery'], WCDT_VERSION);
            wp_enqueue_script('backend-scripts', WCDT_URL . 'assets/js/backend.js', ['wp-color-picker'], WCDT_VERSION, true);


            wp_localize_script(
                'backend-scripts',
                'dt_ajax',
                array(
                    'url' => admin_url('admin-ajax.php'),
                    'nonce' => wp_create_nonce('ajax-nonce'),
                )
            );

            if ( class_exists( 'PWS_VERSION' ) ) {

                $_province = get_terms(array(
                    'taxonomy' => 'state_city',
                    'hide_empty' => false,
                    'parent' => 0
                ));
                $province = wp_list_pluck($_province, 'name', 'term_id');

                $cities = array();
                foreach ($province as $key => $value) {
                    $_cities = get_terms(array(
                        'taxonomy' => 'state_city',
                        'hide_empty' => false,
                        'parent' => $key
                    ));
                    $cities[$key] = wp_list_pluck($_cities, 'name', 'term_id');
                }

                wp_localize_script(
                    'backend-listcities',
                    'dt_pws_listcities',
                    array(
                        'url' => admin_url('admin-ajax.php'),
                        'nonce' => wp_create_nonce('ajax-nonce'),
                        'province' => $province,
                        'cities' => $cities
                    )
                );
            }
        }
        if($screen->id == 'shop_order') {
            wp_enqueue_style('backend-order-css', WCDT_URL . 'assets/css/order.css', '', WCDT_VERSION);
            wp_enqueue_style('wcdt-backend-persian-datepicker-css', WCDT_URL . 'assets/libraries/persianDatepicker/persian-datepicker.min.css', '', WCDT_VERSION);

            wp_dequeue_style('pw-datepicker-css');
            wp_dequeue_script('pw-datepicker-js');

            wp_enqueue_script('wcdt-backend-persian-date-js', WCDT_URL . 'assets/libraries/persianDatepicker/persian-date.min.js', ['jquery'], WCDT_VERSION, true);
            wp_enqueue_script('wcdt-backend-persian-datepicker-js', WCDT_URL . 'assets/libraries/persianDatepicker/persian-datepicker.min.js', ['jquery', 'wcdt-backend-persian-date-js'], WCDT_VERSION, true);
            wp_enqueue_script('backend-order-js', WCDT_URL . 'assets/js/order.js', ['jquery', 'wcdt-backend-persian-date-js', 'wcdt-backend-persian-datepicker-js'], WCDT_VERSION, true);

            $params_order = [];
            if ( class_exists( 'Persian_Woocommerce_Core' ) ) {
            	$pw_jalali = get_option('PW_Options');
            	if(isset($pw_jalali) and !empty($pw_jalali)) {
                    $pw_jalali = $pw_jalali['enable_jalali_datepicker'];
                    $params_order['pw_jalali'] = $pw_jalali;
	            }
            }
            
            $calendar_type = wcdt_get_option('calendar');
            if( !isset($calendar_type) or empty($calendar_type) ) $calendar_type = 'jalali';

            $params_order['calendar'] = $calendar_type;
            $params_order['language'] = [
                'select_time_error' => __('Select the desired time', 'wcdt'),
                'date' => __('Date', 'wcdt'),
                'time' => __('Time', 'wcdt'),
            ];

            wp_localize_script(
                'backend-order-js',
                'wcdt_order_params',
                $params_order
            );

        }
    }
    public function frontend_enqueue_scripts() {
        if(is_checkout()) {
            wp_enqueue_style('dt-frontend-styles', WCDT_URL . 'assets/css/frontend.css');
            wp_enqueue_script('dt-frontend-scripts', WCDT_URL . 'assets/js/frontend.js', array('jquery'), '2', true);
        }
    }


    public function add_product_custom_field_simple(){

        echo '<div class="product_custom_field">';

        woocommerce_wp_text_input( array(
            'id'        => '_delivery_ready_in_days',
            'label'     => __('When Product is ready to send', 'wcdt'),
            'placeholder'     => __('for example: 3', 'wcdt'),
            'desc_tip'     => true,
            'description'     => __('If your product need X days to be ready to send to customer, you can use this option. If you fill this option, in delivery table, the table will be skip for start in X days.', 'wcdt'),
            'type'          => 'number'
        ));

        echo '</div>';
    }



    public function save_product_custom_field_simple($post_id){

        $product_delivery_ready = isset( $_POST['_delivery_ready_in_days'] ) ? $_POST['_delivery_ready_in_days'] : '';

        if(isset($product_delivery_ready) and !empty($product_delivery_ready)) {
            update_post_meta($post_id, '_delivery_ready_in_days', esc_attr( $product_delivery_ready ));
        } else {
            delete_post_meta($post_id, '_delivery_ready_in_days');
        }
    }

    public function add_product_custom_field_variation( $loop, $variation_data, $variation ) {
        echo '<div class="options_group form-row form-row-full">';
        woocommerce_wp_text_input(
            array(
                'id'          => '_delivery_ready_in_days[' . $variation->ID . ']',
                'label'     => __('When Product is ready to send', 'wcdt'),
                'placeholder'     => __('for example: 3', 'wcdt'),
                'desc_tip'    => true,
                'description'     => __('If your product need X days to be ready to send to customer, you can use this option. If you fill this option, in delivery table, the table will be skip for start in X days.', 'wcdt'),
                'value' => get_post_meta( $variation->ID, '_delivery_ready_in_days', true )
            )
        );
        echo '</div>';
    }


    function save_product_custom_field_variation( $post_id ){
        $product_delivery_ready = isset( $_POST['_delivery_ready_in_days'][ $post_id ] ) ? $_POST['_delivery_ready_in_days'][ $post_id ] : '';

        if(isset($product_delivery_ready) and !empty($product_delivery_ready)) {
            update_post_meta($post_id, '_delivery_ready_in_days', esc_attr( $product_delivery_ready ));
        } else {
            delete_post_meta($post_id, '_delivery_ready_in_days');
        }
    }

    public function delivery_time_shortcode_callback( $atts ) {
        $atts = shortcode_atts( array(
            'order_id' => ''
        ), $atts, 'delivery_time' );

        $delivery_info = WC_Delivery_Time_Show::get_delivery_meta_item( $atts['order_id'] );
        if(isset($delivery_info) && !empty($delivery_info)){
            $delivery_date = $delivery_info[0]['delivery_date'];
            $delivery_hour = $delivery_info[0]['delivery_time'];
            $result = '<div class="show-delivery-time"><strong>'. __('delivery date and time: ', 'wcdt') .'</strong><span>' . __('date: ', 'wcdt') . wcdt_convert_number(WC_Delivery_Time_Show::get_date_i18n($delivery_date)) . ' - ' . __('time: ', 'wcdt') .$delivery_hour.'</span></div>';
        }
        return $result;
    }

    public function disable_wcdt_field_shipping_methods() {
        $fastsending_status = wcdt_get_option('fastsending_status');
        if(empty($fastsending_status) or $fastsending_status !== 'enable') return;

        $shipping_methods = WC()->shipping->get_shipping_methods();
        unset($shipping_methods['fastsending']);
        foreach($shipping_methods as $key => $value) {
            add_filter('woocommerce_shipping_instance_form_fields_'.$key, function ($fields) {
                $fields['disable_wcdt'] = [
                    'title' => 'غیرفعال کردن زمان ارسال',
                    'type' => 'select',
                    'class' => 'wc-enhanced-select',
                    'default' => 'no',
                    'description' => 'این کنترل مشخص میکند که بعد از انتخاب روش ارسال، زمان ارسال نمایش داده شود یا نه!',
                    'options' => [
                        'no' => __('no', 'wcdt'),
                        'yes' => __('yes', 'wcdt'),
                    ],
                    'desc_tip' => true
                ];
                return $fields;
            }, 10, 1);
        }
    }

}